Ms Access Mdb class file

<?php

class mdb
{
  var $RS = 0;
  var $ADODB = 0;
 
  var $RecordsAffected;
 
  var $strProvider = 'Provider=Microsoft.Jet.OLEDB.4.0';
  var $strMode     = 'Mode=ReadWrite';
  var $strPSI      = 'Persist Security Info=False';
  var $strDataSource  = '';
  var $strConn     = '';
  var $strRealPath = '';
 
  var $recordcount = 0;
  var $ok = false;
 
 
  /**
  * Constructor needs path to .mdb file
  *
  * @param string $dsn = path to *.mdb file
  * @return boolean success
  */
  function mdb( $dsn='Please enter DataSource!' )
  {
    $this->strRealPath = realpath( $dsn );
    if( strlen( $this->strRealPath ) > 0 )
    {
      $this->strDataSource = 'Data Source='.$this->strRealPath;
      $result = true;
    }
    else
    {
      echo "<br>mdb::mdb() File not found $dsn<br>";
      $result = false;
    }
   
    $this->RecordsAffected = new VARIANT();
   
    $this->open();
   
  } // eof constructor mdb()
 
 
  function open( )
  {
    if( strlen( $this->strRealPath ) > 0 )
    {
 
      $this->strConn =
        $this->strProvider.';'.
        $this->strDataSource.';'.
        $this->strMode.';'.
        $this->strPSI;
       
      $this->ADODB = new COM( 'ADODB.Connection' );
     
      if( $this->ADODB )
      {
        $this->ADODB->open( $this->strConn );
       
        $result = true;
      }
      else
      {
        echo '<br>mdb::open() ERROR with ADODB.Connection<br>'.$this->strConn;
        $result = false;
      }
    }
   
    $this->ok = $result;
   
    return $result;
  } // eof open()
 
 
  /**
  * Execute SQL-Statement
  * @param string $strSQL = sql statement
  * @param boolean $getrecordcount = true when a record count is wanted
  */
  function execute( $strSQL, $getrecordcount = false )
  {

    $this->RS = $this->ADODB->execute( $strSQL, &$this->RecordsAffected );
   
    if( $getrecordcount == true )
    {

      $this->RS->MoveFirst();
      $this->recordcount = 0;
     
      # brute force loop
      while( $this->RS->EOF == false )
      {
        $this->recordcount++;
        $this->RS->MoveNext();
      }
      $this->RS->MoveFirst();

    }
   
       
  } // eof execute()
 
  function eof()
  {
    return $this->RS->EOF;
  } // eof eof()
 
  function movenext( )
  {
    $this->RS->MoveNext();
  } // eof movenext()
 
  function movefirst()
  {
    $this->RS->MoveFirst();
  } // eof movefirst()
 
  function close()
  {
 
    @$this->RS->Close(); // Generates a warning when without "@"
    $this->RS=null;
 
    @$this->ADODB->Close();
    $this->ADODB=null;
  } // eof close()
 
  function fieldvalue( $fieldname )
  {
    return $this->RS->Fields[$fieldname]->value;
  } // eof fieldvalue()
 
  function fieldname( $fieldnumber )
  {
    return $this->RS->Fields[$fieldnumber]->name;
  } // eof fieldname()
 
  function fieldcount( )
  {
    return $this->RS->Fields->Count;
  } // eof fieldcount()
 
} // eoc mdb
?>